/*蓝色按钮,绝对定位*/
.blueButton {
    position: absolute;
    display: block;
    text-align: center;
    cursor: pointer;
    border-radius: 4px;
}

.blueButton:hover {
    text-decoration: none;
}

/*自定义上传,位置大小都和a完全一样,而且完全透明*/
.fileUpload {
    position: absolute;
    display: block;
    width: 100px;
    height: 40px;
    opacity: 0;
}

#sourcefile ,#sourcefileOfSign{
    float: left;
}

#txtFileUpload,#txtFileUploadOfSign {
    float: left;
}

.alert-warning, .alert-info {
    left: 50%;
    position: absolute;
    top: 50%;
    z-index: 2;
}